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Bab Fungsi Komposisi
Matematika SMA Kelas X

(fog) (x) = (x + 17) / (2x - 5)
f ((x + 4) / (2x - 5)) = (x + 17) / (2x - 5)
f ((x + 4) / (2x - 5)) = 3 ((x + 4) / (2x - 5)) - 1
f(x) = 3x - 1

f(-3) = 3 . (-3) - 1
f(-3) = -9 - 1
f(-3) = - 10